SOLUTION: No one has been able to solve this for me Explain how exponnential functions are relevant and applicable to real life situations. Think of a real life situation that can be

Algebra ->  Graphs -> SOLUTION: No one has been able to solve this for me Explain how exponnential functions are relevant and applicable to real life situations. Think of a real life situation that can be      Log On


   

Question 545839: No one has been able to solve this for me
Explain how exponnential functions are relevant and applicable to real life
situations.
Think of a real life situation that can be represented by an exponential
function.
Write a function to represent the situation.
Label all vaiables.
Explain how you wrote the function.
Graph your equation.

pleasee help

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Explain how exponential functions are relevant and applicable to real life
situations.
Think of a real life situation that can be represented by an exponential
function.
Write a function to represent the situation.
Label all variables.
Explain how you wrote the function.
Graph your equation.
:
One example is the accumulated amt of $ having compound interest, like a retirement account etc
A = P%2A%281%2B%28r%2Fn%29%29%5E%28nt%29
where
A = accumulated amt after t time
P = initial amt deposited
r = interest rate in decimals
n = compounded times per year
t = no. years
:
Assume an amt deposit, P = $10000, interest rate of 8%, compounded 4 times a year.
f(t) = A
f(t) = 10000*%281%2B%28.08%2F4%29%29%5E%284t%29
f(t) = 10000%2A%281.02%29%5E%284t%29 is the function
:
to graph it rewrite the equation to: y = 10000%2A%281.02%29%5E%284x%29
+graph%28+300%2C+200%2C+-10%2C+40%2C+-10000%2C+100000%2C+10000%2A%281.02%29%5E%284x%29%29+
amt on the y axis, years on the x axis
:
You can see after 20 yrs, you will about about $48,750